24 lines
437 B
C++
24 lines
437 B
C++
#include<cstdio>
|
|
#include<algorithm>
|
|
using namespace std;
|
|
typedef long long LL;
|
|
LL x,y,m,n,L,t,r,d;
|
|
LL exgcd(LL a,LL b,LL &x,LL &y)
|
|
{
|
|
if(b==0) { x=1; y=0; return a; }
|
|
LL d=exgcd(b,a%b,y,x);
|
|
y-=x*(a/b);
|
|
return d;
|
|
}
|
|
int main()
|
|
{
|
|
#ifdef local
|
|
freopen("pro.in","r",stdin);
|
|
#endif
|
|
scanf("%lld%lld%lld%lld%lld",&x,&y,&m,&n,&L);
|
|
d=exgcd(m-n,L,t,r);
|
|
if((y-x)%d) puts("Impossible");
|
|
else printf("%lld\n",((y-x)/d*t%L+L)%L);
|
|
return 0;
|
|
}
|